The archean atmosphere

DC Catling, KJ Zahnle - Science advances, 2020‏ - science.org
The atmosphere of the Archean eon—one-third of Earth's history—is important for
understanding the evolution of our planet and Earth-like exoplanets. New geological proxies …

The chemical index of alteration (CIA) as a proxy for climate change during glacial-interglacial transitions in Earth history

P Wang, Y Du, W Yu, TJ Algeo, Q Zhou, Y Xu, L Qi… - Earth-Science …, 2020‏ - Elsevier
The glacial-interglacial transitions of ice ages are associated with large, rapid changes in
climate, which potentially can be reconstructed from stratigraphic profiles of the chemical …

Archean upper crust transition from mafic to felsic marks the onset of plate tectonics

M Tang, K Chen, RL Rudnick - Science, 2016‏ - science.org
The Archean Eon witnessed the production of early continental crust, the emergence of life,
and fundamental changes to the atmosphere. The nature of the first continental crust, which …

Reexamination of 2.5-Ga “whiff” of oxygen interval points to anoxic ocean before GOE

SP Slotznick, JE Johnson, B Rasmussen, TD Raub… - Science …, 2022‏ - science.org
Transient appearances of oxygen have been inferred before the Great Oxygenation Event
(GOE)[∼ 2.3 billion years (Ga) ago] based on redox-sensitive elements such as Mo and S …

Compositional evolution of the upper continental crust through time, as constrained by ancient glacial diamictites

RM Gaschnig, RL Rudnick, WF McDonough… - … et Cosmochimica Acta, 2016‏ - Elsevier
The composition of the fine-grained matrix of glacial diamictites from the Mesoarchean,
Paleoproterozoic, Neoproterozoic, and Paleozoic, collected from four modern continents …

New perspectives on the Li isotopic composition of the upper continental crust and its weathering signature

L Sauzéat, RL Rudnick, C Chauvel, M Garçon… - Earth and Planetary …, 2015‏ - Elsevier
Lithium isotopes are increasingly used to trace both present-day and past weathering
processes at the surface of the Earth, and could potentially be used to evaluate the average …

Nb/Ta systematics in arc magma differentiation and the role of arclogites in continent formation

M Tang, CTA Lee, K Chen, M Erdman, G Costin… - Nature …, 2019‏ - nature.com
The surfaces of rocky planets are mostly covered by basaltic crust, but Earth is unique in that
it also has extensive regions of felsic crust, manifested in the form of continents. Exactly how …

Crustal thickening and endogenic oxidation of magmatic sulfur

M Tang, CTA Lee, WQ Ji, R Wang, G Costin - Science Advances, 2020‏ - science.org
Porphyry ore deposits, Earth's most important resources of copper, molybdenum, and
rhenium, are strongly associated with felsic magmas showing signs of high-pressure …

Interaction of microorganisms with carbonates from the micro to the macro scales during sedimentation: Insights into the early stage of biodegradation

X Gao, Z Han, Y Zhao, G Zhou, X Lyu, Z Qi, F Liu… - Journal of …, 2024‏ - Elsevier
The assembly process of Organic Matter (OM) from single molecules to polymers and the
formation process of Ca–CO 3 ion-pairs are explored at the micro-scale, and then the …

Barium isotopic composition of the upper continental crust

XY Nan, HM Yu, RL Rudnick, RM Gaschnig… - … et Cosmochimica Acta, 2018‏ - Elsevier
The upper continental crust (UCC) is an important reservoir of Ba within the Earth. We report
high precision (≤±0.05‰, 2SD) Ba isotopic data for 71 samples (including granites …